10.25'' Android Navigation for Mercedes S W221 CL class - Accessories & wire connection instruction 

You can check the connector in the glove box, in it should have 3 connectors (red,yellow,white), this connector is ok to transfer the audio for android screen (the red /white connector is for audio input).

FM Transmitter is probably your only option.

Brother, i have the same problem with my japanese car. Did you find the answer to it? Did a android head unit just work when connected to a japanese car?

@@slinslim i decided not to convert mine. just keep it stock as possible.will keep the car forever. can barely see cars like this on the road here in nz.

@@thehobbyist5292 Okay thanks. Did you also fix the time/clock problem or just let it go?

@@slinslim theres no way to adjust the clock as its set by the computer of the car or gps, so if the car is japanese the time will be japanese. some people say u can move or adjust the pointers of the clock by opening the clock itself